June 7, 2007 Porsche enhanced its already considerable reputation yesterday by once again being awarded the number-one nameplate in the J.D. Power and Associates Initial Quality Study (IQS). The IQS measures new-vehicle quality at 90 days of ownership. It captures quality of design and quality of production (defects and malfunctions) problems experienced by owners using a problems-per-100 vehicles (PP100) metric and it’s the results of surveying a whopping 97,000 purchasers and lessees. The study includes quality comparisons by manufacturer, assembly plant, model, and platform. Porsche ranked number one for the second year running, ahead of Lexus, Lincoln, Honda and Mercedes-Benz. Honda, with the fewest problems per 100 among non-premium brands, improved from sixth since the 2006 study.